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A vented corn starch dust explosion in an 11.5 m3 vessel: Experimental and numerical study
RISE Research Institutes of Sweden, Safety and Transport, Safety Research.ORCID iD: 0000-0002-6175-6595
IND EX®, Germany.
Chalmers University of Technology, Sweden.
2022 (English)In: Journal of Loss Prevention in the Process Industries, ISSN 0950-4230, E-ISSN 1873-3352, Vol. 75, article id 104707Article in journal (Refereed) Published
Abstract [en]

A vented corn starch dust explosion in an 11.5 m3 vessel is studied using both experimental and numerical methods. The reduced explosion overpressure in the vessel is recorded using two pressure sensors mounted on the wall inside of the vessel. Unsteady three-dimensional Reynolds-Averaged Navier-Stokes simulations of the experiment are performed using the Flame Speed Closure (FSC) model of the influence of turbulence on premixed combustion. The model was thoroughly validated in previous studies and was earlier implemented into OpenFOAM CFD software. The self-acceleration of a large-scale flame kernel is associated with the influence of combustion-induced pressure perturbations on the flow of unburned reactants ahead of the kernel. Accordingly, the FSC model is extended by adapting the well-known experimental observations of the self-similarity of the kernel acceleration. Influence of different turbulence models on the simulated results is also explored. Thanks to the extension of the FSC model, the measured time-dependence of the pressure is well predicted when the k-omega-SST turbulence model is used. © 2021 The Authors

Place, publisher, year, edition, pages
Elsevier Ltd , 2022. Vol. 75, article id 104707
Keywords [en]
Computational fluid dynamics, Corn starch, Dust, Experiments, Flame self-acceleration, Modelling, Open source, OpenFOAM, Turbulent combustion, Vented explosion, Explosions, Navier Stokes equations, Numerical methods, Open source software, Open systems, Starch, Turbulence models, Closure models, Flame speed, Modeling, Open-source, Starch dusts, Turbulent-combustion, Combustion
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:ri:diva-57328DOI: 10.1016/j.jlp.2021.104707Scopus ID: 2-s2.0-85120681383OAI: oai:DiVA.org:ri-57328DiVA, id: diva2:1620836
Note

 Funding details: 180028; Funding details: Vetenskapsrådet, VR, 2018–05973; Funding text 1: The authors would like to acknowledge AFA-Försäkring for financial support of this project (grant number 180028 ). The computations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at HPC2N partially funded by the Swedish Research Council through grant agreement no. 2018–05973 and RISE Simulation Lab. The SNIC projects SNIC2021-22-217, SNIC2021-5-185 and SNIC2021-22-821 are acknowledged. The authors would like to acknowledge IND EX® for providing the real scale test data of the IND EX® research project “Influence of the Explosion Relief Device Geometry on its Venting Efficiency”.

Available from: 2021-12-16 Created: 2021-12-16 Last updated: 2024-04-09Bibliographically approved

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Huang, Chen

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